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Make Eio.Promise lock-free #401

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merged 2 commits into from
Jan 9, 2023
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@talex5 talex5 commented Jan 6, 2023

This is slightly faster and simplifies the code.

I added an extra benchmark using two domains with a spinning fiber so they don't go to sleep.

promise

It's a bit clearer without the 3rd one:

promise2

@talex5 talex5 force-pushed the lock-free-promise branch from 024427d to 499d03c Compare January 6, 2023 10:46
@talex5 talex5 marked this pull request as draft January 6, 2023 11:04
@talex5 talex5 marked this pull request as ready for review January 6, 2023 11:23
talex5 added 2 commits January 9, 2023 10:47
Include a test where the domains never sleep, to avoid simply
benchmarking time to wake a domain.
This is slightly faster and simplifies the code.
@talex5 talex5 force-pushed the lock-free-promise branch from 499d03c to e93a042 Compare January 9, 2023 10:47
@talex5 talex5 merged commit 80f1486 into ocaml-multicore:main Jan 9, 2023
@talex5 talex5 deleted the lock-free-promise branch January 9, 2023 10:58
talex5 added a commit to talex5/opam-repository that referenced this pull request Feb 1, 2023
CHANGES:

New features:

- Add `Eio.Net.run_server` (@bikallem @talex5 ocaml-multicore/eio#408).
  Runs an accept loop in one or more domains, with cancellation and graceful shutdown,
  and an optional maximum number of concurrent connections.

- Add `Buf_read.BE` and `LE` parsers (@Cjen1 ocaml-multicore/eio#399).
  Parse numbers in various binary formats.

- Add `Eio.Buf_read.uint8` (@talex5 ocaml-multicore/eio#418).

Performance:

- Make `Eio.Condition` lock-free (@talex5 ocaml-multicore/eio#397 ocaml-multicore/eio#381).
  In addition to being faster, this allows using conditions in signal handlers.

- Make `Eio.Semaphore` lock-free (@talex5 @polytypic ocaml-multicore/eio#398).

- Make `Eio.Stream` lock-free when the capacity is zero (@talex5 ocaml-multicore/eio#413 ocaml-multicore/eio#411).

- Make `Eio.Promise` lock-free (@talex5 ocaml-multicore/eio#401).

Bug fixes:

- eio_linux: call `Uring.submit` as needed (@talex5 @bikallem ocaml-multicore/eio#428).
  Previously, we could fail to submit a job promptly because the SQE queue was full.

- Fix luv signals (@haesbaert ocaml-multicore/eio#412).
  `libuv` automatically retries polling if it gets `EINTR`, without giving OCaml signal handlers a chance to run.

- eio_luv: fix some resource leaks (@talex5 @patricoferris ocaml-multicore/eio#421).

- eio_luv: fix "unavailable signal" error on Windows (@talex5 ocaml-multicore/eio#420, reported by @nojb).

- Fix `Buf_write.BE.uint48` and `LE.uint48` (@adatario ocaml-multicore/eio#418).

Documentation:

- Add example programs (@talex5 ocaml-multicore/eio#389).

- Update network examples to use `run_server` (@talex5 ocaml-multicore/eio#417).

- Add a warning to the tutorial about `Fiber.first` (@talex5 ocaml-multicore/eio#394).

- Clarify the epoch used for `Eio.Time.now` (@bikallem ocaml-multicore/eio#395).

- Describe `secure_random` as an infinite source (@patricoferris ocaml-multicore/eio#426).

- Update README for OCaml 5 release (@talex5 ocaml-multicore/eio#384 ocaml-multicore/eio#391 ocaml-multicore/eio#393).

Other changes:

- Delay setting `SIGPIPE` handler until the `run` function is called (@talex5 ocaml-multicore/eio#420).

- Remove debug-level logging (@talex5 ocaml-multicore/eio#403).

- eio-luv: improve `process.md` test (@smondet ocaml-multicore/eio#414).

- Update to Dune 3 (@talex5 ocaml-multicore/eio#410).

- Remove test dependency on Astring (@talex5 ocaml-multicore/eio#402 ocaml-multicore/eio#404).

- Simplify cancellation logic (@talex5 ocaml-multicore/eio#396).

- time: `Mtime.Spand.to_s` has been deprecated in mtime 2.0.0 (@bikallem ocaml-multicore/eio#385).
talex5 added a commit to talex5/opam-repository that referenced this pull request Feb 1, 2023
CHANGES:

New features:

- Add `Eio.Net.run_server` (@bikallem @talex5 ocaml-multicore/eio#408).
  Runs an accept loop in one or more domains, with cancellation and graceful shutdown,
  and an optional maximum number of concurrent connections.

- Add `Buf_read.BE` and `LE` parsers (@Cjen1 ocaml-multicore/eio#399).
  Parse numbers in various binary formats.

- Add `Eio.Buf_read.uint8` (@talex5 ocaml-multicore/eio#418).

Performance:

- Make `Eio.Condition` lock-free (@talex5 ocaml-multicore/eio#397 ocaml-multicore/eio#381).
  In addition to being faster, this allows using conditions in signal handlers.

- Make `Eio.Semaphore` lock-free (@talex5 @polytypic ocaml-multicore/eio#398).

- Make `Eio.Stream` lock-free when the capacity is zero (@talex5 ocaml-multicore/eio#413 ocaml-multicore/eio#411).

- Make `Eio.Promise` lock-free (@talex5 ocaml-multicore/eio#401).

Bug fixes:

- eio_linux: call `Uring.submit` as needed (@talex5 @bikallem ocaml-multicore/eio#428).
  Previously, we could fail to submit a job promptly because the SQE queue was full.

- Fix luv signals (@haesbaert ocaml-multicore/eio#412).
  `libuv` automatically retries polling if it gets `EINTR`, without giving OCaml signal handlers a chance to run.

- eio_luv: fix some resource leaks (@talex5 @patricoferris ocaml-multicore/eio#421).

- eio_luv: fix "unavailable signal" error on Windows (@talex5 ocaml-multicore/eio#420, reported by @nojb).

- Fix `Buf_write.BE.uint48` and `LE.uint48` (@adatario ocaml-multicore/eio#418).

Documentation:

- Add example programs (@talex5 ocaml-multicore/eio#389).

- Update network examples to use `run_server` (@talex5 ocaml-multicore/eio#417).

- Add a warning to the tutorial about `Fiber.first` (@talex5 ocaml-multicore/eio#394).

- Clarify the epoch used for `Eio.Time.now` (@bikallem ocaml-multicore/eio#395).

- Describe `secure_random` as an infinite source (@patricoferris ocaml-multicore/eio#426).

- Update README for OCaml 5 release (@talex5 ocaml-multicore/eio#384 ocaml-multicore/eio#391 ocaml-multicore/eio#393).

Other changes:

- Delay setting `SIGPIPE` handler until the `run` function is called (@talex5 ocaml-multicore/eio#420).

- Remove debug-level logging (@talex5 ocaml-multicore/eio#403).

- eio-luv: improve `process.md` test (@smondet ocaml-multicore/eio#414).

- Update to Dune 3 (@talex5 ocaml-multicore/eio#410).

- Remove test dependency on Astring (@talex5 ocaml-multicore/eio#402 ocaml-multicore/eio#404).

- Simplify cancellation logic (@talex5 ocaml-multicore/eio#396).

- time: `Mtime.Spand.to_s` has been deprecated in mtime 2.0.0 (@bikallem ocaml-multicore/eio#385).
talex5 added a commit to talex5/opam-repository that referenced this pull request Feb 1, 2023
CHANGES:

New features:

- Add `Eio.Net.run_server` (@bikallem @talex5 ocaml-multicore/eio#408).
  Runs an accept loop in one or more domains, with cancellation and graceful shutdown,
  and an optional maximum number of concurrent connections.

- Add `Buf_read.BE` and `LE` parsers (@Cjen1 ocaml-multicore/eio#399).
  Parse numbers in various binary formats.

- Add `Eio.Buf_read.uint8` (@talex5 ocaml-multicore/eio#418).

Performance:

- Make `Eio.Condition` lock-free (@talex5 ocaml-multicore/eio#397 ocaml-multicore/eio#381).
  In addition to being faster, this allows using conditions in signal handlers.

- Make `Eio.Semaphore` lock-free (@talex5 @polytypic ocaml-multicore/eio#398).

- Make `Eio.Stream` lock-free when the capacity is zero (@talex5 ocaml-multicore/eio#413 ocaml-multicore/eio#411).

- Make `Eio.Promise` lock-free (@talex5 ocaml-multicore/eio#401).

Bug fixes:

- eio_linux: call `Uring.submit` as needed (@talex5 @bikallem ocaml-multicore/eio#428).
  Previously, we could fail to submit a job promptly because the SQE queue was full.

- Fix luv signals (@haesbaert ocaml-multicore/eio#412).
  `libuv` automatically retries polling if it gets `EINTR`, without giving OCaml signal handlers a chance to run.

- eio_luv: fix some resource leaks (@talex5 @patricoferris ocaml-multicore/eio#421).

- eio_luv: fix "unavailable signal" error on Windows (@talex5 ocaml-multicore/eio#420, reported by @nojb).

- Fix `Buf_write.BE.uint48` and `LE.uint48` (@adatario ocaml-multicore/eio#418).

Documentation:

- Add example programs (@talex5 ocaml-multicore/eio#389).

- Update network examples to use `run_server` (@talex5 ocaml-multicore/eio#417).

- Add a warning to the tutorial about `Fiber.first` (@talex5 ocaml-multicore/eio#394).

- Clarify the epoch used for `Eio.Time.now` (@bikallem ocaml-multicore/eio#395).

- Describe `secure_random` as an infinite source (@patricoferris ocaml-multicore/eio#426).

- Update README for OCaml 5 release (@talex5 ocaml-multicore/eio#384 ocaml-multicore/eio#391 ocaml-multicore/eio#393).

Other changes:

- Delay setting `SIGPIPE` handler until the `run` function is called (@talex5 ocaml-multicore/eio#420).

- Remove debug-level logging (@talex5 ocaml-multicore/eio#403).

- eio-luv: improve `process.md` test (@smondet ocaml-multicore/eio#414).

- Update to Dune 3 (@talex5 ocaml-multicore/eio#410).

- Remove test dependency on Astring (@talex5 ocaml-multicore/eio#402 ocaml-multicore/eio#404).

- Simplify cancellation logic (@talex5 ocaml-multicore/eio#396).

- time: `Mtime.Spand.to_s` has been deprecated in mtime 2.0.0 (@bikallem ocaml-multicore/eio#385).
talex5 added a commit to talex5/opam-repository that referenced this pull request Feb 1, 2023
CHANGES:

New features:

- Add `Eio.Net.run_server` (@bikallem @talex5 ocaml-multicore/eio#408).
  Runs an accept loop in one or more domains, with cancellation and graceful shutdown,
  and an optional maximum number of concurrent connections.

- Add `Buf_read.BE` and `LE` parsers (@Cjen1 ocaml-multicore/eio#399).
  Parse numbers in various binary formats.

- Add `Eio.Buf_read.uint8` (@talex5 ocaml-multicore/eio#418).

Performance:

- Make `Eio.Condition` lock-free (@talex5 ocaml-multicore/eio#397 ocaml-multicore/eio#381).
  In addition to being faster, this allows using conditions in signal handlers.

- Make `Eio.Semaphore` lock-free (@talex5 @polytypic ocaml-multicore/eio#398).

- Make `Eio.Stream` lock-free when the capacity is zero (@talex5 ocaml-multicore/eio#413 ocaml-multicore/eio#411).

- Make `Eio.Promise` lock-free (@talex5 ocaml-multicore/eio#401).

Bug fixes:

- eio_linux: call `Uring.submit` as needed (@talex5 @bikallem ocaml-multicore/eio#428).
  Previously, we could fail to submit a job promptly because the SQE queue was full.

- Fix luv signals (@haesbaert ocaml-multicore/eio#412).
  `libuv` automatically retries polling if it gets `EINTR`, without giving OCaml signal handlers a chance to run.

- eio_luv: fix some resource leaks (@talex5 @patricoferris ocaml-multicore/eio#421).

- eio_luv: fix "unavailable signal" error on Windows (@talex5 ocaml-multicore/eio#420, reported by @nojb).

- Fix `Buf_write.BE.uint48` and `LE.uint48` (@adatario ocaml-multicore/eio#418).

Documentation:

- Add example programs (@talex5 ocaml-multicore/eio#389).

- Update network examples to use `run_server` (@talex5 ocaml-multicore/eio#417).

- Add a warning to the tutorial about `Fiber.first` (@talex5 ocaml-multicore/eio#394).

- Clarify the epoch used for `Eio.Time.now` (@bikallem ocaml-multicore/eio#395).

- Describe `secure_random` as an infinite source (@patricoferris ocaml-multicore/eio#426).

- Update README for OCaml 5 release (@talex5 ocaml-multicore/eio#384 ocaml-multicore/eio#391 ocaml-multicore/eio#393).

Other changes:

- Delay setting `SIGPIPE` handler until the `run` function is called (@talex5 ocaml-multicore/eio#420).

- Remove debug-level logging (@talex5 ocaml-multicore/eio#403).

- eio-luv: improve `process.md` test (@smondet ocaml-multicore/eio#414).

- Update to Dune 3 (@talex5 ocaml-multicore/eio#410).

- Remove test dependency on Astring (@talex5 ocaml-multicore/eio#402 ocaml-multicore/eio#404).

- Simplify cancellation logic (@talex5 ocaml-multicore/eio#396).

- time: `Mtime.Spand.to_s` has been deprecated in mtime 2.0.0 (@bikallem ocaml-multicore/eio#385).
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